What are Fossil fuels? Why are they so called?
Answers
Fossil fuels are energy resources derived from the altered remains of living organisms that were buried by sediments and exposed to elevated pressures and temperatures for millions of years. Fossil fuels can be: solids, as in the case of coal which is derived primarily from land plants; liquids, such as crude oil or tar sands; or gas, such as methane. Oil and gas hydrocarbons are derived primarily from the remains of marine plants. They can be turned into other fuels, raw materials, and can be used in many things.
Examples of fossil fuels are crude oil (petroleum), natural gas, and coal.
The theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the Earth's crust over millions of years was first introduced by Georgius Agricola in 1556 and later by Mikhail Lomonosov in the 18th century.